Lington



(No Model.) 2 Sheets-Sheet 1.

B. B. ELLINGTON.

ELEVATOR."

atented May 29, 1888 Jnwzgior grapher, WasMngion, n. c

(No Model.)

2 Sheets-Sheet 2. E. B. ELLINGTON.

ELEVATOR.

No. 383,715. Patented May 29, 1888'.

FIG.5.

gi 1W N. PETERSv Plmto-Lilhagnphzr. Wzihington, D.,C.

Fries.

EDWARD n. ELLINGTON, or WESTMINSTER, ENGLAND.

ELEVATOR.

SPECIFICATION forming part of Letters Patent No. 383,715, dated May 29, 1888.

Application filed November 2, 1887. Serial No. 254.109. (No model.) Patented in England January 27, 1887. No.1,190; in France November 2, 1887, No. 186,721,- in Belgium November 4. 1887, No. 79.412; inVictoria November ll, 1887, No. 5,455, and

, in New South Wales November 23, 1887, No. 354.

T0 aZZ whom it may concern.-

Be it known that I, EDWARD BAYZAND EL- LINGTON, a citizen of England, residing at Palace Ohambers, NVestminster, in the county of Middlesex, England, haveinvented a new and useful Improvement in Hydraulic Lifts, (for which I have obtained patents in Great Britain January 27, 1887, No. 1,190; in France November 2, 1887, No. 186,721; in Belgium November 4,1887, No. 79,412; in Victoria No vember 21, 1887, No. 5, 155, and in New South Vales November 23, 1887, No. 35t,) of which the following is a specification.

My invention relates to lifts such as are employed in buildings for communicating from floor to floor, these being worked, in the manner of hydraulic cranes, by ropes or chains passing over pulleys and attached to the piston or plunger of a hydrauliccylinder.

The chief objects of my invention are to ar range in a compact and convenient manner the hydraulic cylinder and its attachments, and to provide for safety in case of any of the connections from the plunger to the cage yielding or breaking, as I will describe, referring to the accompanying drawings.

Figure 1 is a vertical section of the lift-shaft, showing the general arrangement of the cage, the hydraulic cylinder, and their connections. Fig. 2 is a vertical section, and Fig. 3 is an elevation,ofthe hydraulic cylinder and its pulleys. Fig. 4 is a side view, Fig. 5 an end view, and Fig. 6 a plan, of the cage with means of arresting it in case of accident.

I place vertically in or at the side of the shaft the hydraulic cylinder A, making it as long as possible, so as to avoid as much as possible multiplication oflhe strokeby pulleys orotherwise, and I fit it with a plunger, B B, passing through packings accessible externally at both ends of the cylinder A, the upper part, B, of the plunger being smaller than the lowerpart, B, which affords an area on which the waterpressure acts to move the plunger down.

On the upper end of the plunger 13,1 mount, in the usual way, multiplying pulleys or gear 0, from which the'ropes or chains (of which there are preferably four) pass over guidepulleys D at the upper part of the lift-shaft,

cross-heads E, pivoted to the cage. To the lower end of the plunger B, I attach counter weights F, and I also attach thereto multiply ing pulleys or drums G, from which independent ropes pass up over guidepullcys H at the 5 top of the shaft, and down to sliding Wedges K, arranged in the guides of the cage,as shown in Figs. 4, 5, and 6. The wedges K are usually kept down j ust clear of the guides L by weights M; but should the attachments of the cage to the plunger B give way the cage would begin to descend more rapidly than the wedges K, which are commanded by the independent rope worked from B, and consequently the wedges would in that case move upward relatively to the cage and act as a brake, retarding or entirely stopping the cage. When the guides are of wood, as indicated in the draw ings, the faces of the wedges may be serrated, as shown, so as to take a firm grip of the guides.

Obviously, whether the hydraulic cylinder is arranged vertically, as shown in the drawings, or in any other position, the brakewedgcs K may be applied to the cage, as described, the ropcs to which they are attached being connected to the working plunger, so as to move uniformly with the suspending ropes or chains.

To the pivoted cross-heads E, to which the main ropes or chains of the cage are attached, I apply indicators N, one or other of which, projecting through a hole in the roof of the cage, may show to the attendant in. the cageif either of these cross-heads has rocked out of level, thereby warning him of danger by ap prising him that one or other of the ropes or chains has yielded unduly or broken.

Having thus described the nature of my in vention and the best means I know for carrying the same into practical effect, I claim- 1. In combination with the guides, L L, wedges K K, and the rocking cross-head E, attached to an elevator-cage, an elongated hydraulic cylinder, A, the plunger B B, carrying the multiplying drums or pulleys G G, and weights F, the guide-pulleys D H, and ropes or pulleys passing in duplicate over said multiplying-drums and guide-pulleys to the wedges and rocking cross-head, substantially and are attached to opposite ends of rocking l as described.

2. The combination, with an elevator-cage having a rocking cross-head, E, for attachment of suspension ropes or chains, of the indicators N N, attached to said cross-head and depending into the cage, substantially as described.

3. In combination with an elevator-cage having a rocking cross-head, E, the long vertical hydraulic cylinder A, the plunger B 13, carrying a multiplying-gear, G, and weights F, the guide-pulleys D D, and ropes or chains passed in duplicate over said guide-pulleys from the multiplyinggear to the rocking crosshead, substantially as described.

4. In combination with an elevator-cage, its suspension ropes or chains, and an elongated vertical hydraulic cylinder having a plunger, B B, carrying a multiplying-gear for attachment of said suspension ropes or chains,

a multiplying-gear, G, carried by said plunger,

weighted brake-wedges K K, arranged on the cage, guide-pulleys H H, and. an independent set of ropes or chains passed from the gear G over the pulleys H to said brake-wedges and moved uniformly with thesuspeusion ropes or chains, substantially as described. 7

In testimony whereofI have signed my name to this specification, in the presence of two subscribing witnesses, this 21st day of Octoher, A. D. 1887.

E. B. ELLINGTON. \Vitnesses OLIVER IMRAY, Patent Agent, 28 Southampton Buildings, London,

WALTE J. SKERTEN, 17 Gracechurch Street, London, E. 0. 

